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Protective surface finished by shot-blasting and the surface is smooth and neatness. Smooth continuous bore way without seating recess, it is not easy to get impurity pilled up. Making the liquid straightway. Both inner and outer are coated with advanced knowledge of rubber vulcanization then making
sure of the elasticity of rubber, and make sure the exact geometry dimension. Rubber and ductile cast iron valve hand together hardly Which can avoid fall-off due to long-term use. Both inner and outer are coated with non-toxic powder epoxy resin to strengthen the capacity of Corrosion resisting and raise the quality of water supply. The older ductile iron valve is easy to rupture after being impacted by nonagons. It can stop rupture depend on the good mechanics capability of ductile iron. With the three “O” – rings, the leakage can be greatly reduced and the “O” – ring can be replaced under this condition with pressure and without stopping water. The thrust axletree
reduces the frictional resistance and lowers the operational torque. And it can be switch seal ring without opening and closing. The body is founded minutely, the rigid geometry size ensure inner sealing of valve without
any process. This body is made of ductile iron, it is 20%-30% lighter than the olds. Easily to fixing and servicing. TECHNIC CRITERION
Nominal pressure:1.0～1.6MPa
Applicable medium: water、sewage、oil、etc. Applicable temperature:_120℃ Main material of valve: ductile iron、iron. APPLICABLE STANDARDS
American Standard
Design to ANSI/AWWA C509
Face to face dimension to ASME B16.10-2000 (ISO 3 series) Flange and drilling To SME/ANSI B16.42-1998
British Standard
Design to BS5163、BS5150
Face to face dimension to BS5163 (ISO 3series、ISO19 series) Flange and drilling To BS4504 part1 (EN1092) Germany Standard
Design to DIN3352
Face to face dimension to DIN3202 (F4:ISO 14 series;F5: ISO 15 series) Flange and drilling to BS EN1092
Chinese Standard
Design to CJ/T219-2005
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Gate valve
